Thrash ing-machine



(No'MddeL) J. G. KEITH.

Thras-hing'Machine.

No. 240,130. Patented April 26,1 81;

WITNESSES: J INVENTOR:

ATTORNEYS.

UNITED STATES PATENT OFFICE.

JAMES C. KEITH, OF BATTLE GREEK, MICHIGAN.

THFlASHlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 240,730, dated April 26, 1881.

Application filed April 22, 1880. (No model.)

To all whom it may concern! Be it known that 1, JAMES C. KEITH, of Battle Creek, in the county of Calhoun and State of Michigan, have invented a new and useful ImprovementinThrashing-Machines, of which the following is a specification.

The object of my invention is to prevent winding of the straw upon the thrashing-cylinder when the machine is being used where the straw is long and flexible.

The invention consists in a novel construction and arrangement of a revolving comb and stationary but adjustable comb-shield, and the combination thereof with the thrashing-cylinder, whereby any straw which may be disposed to wind upon said cylinder is arrested and combed out therefrom and thrown into the separator, and thus pret ented from clogging the machine.

In the accompanying drawings, Figure l is a top View of a machine embodying my improvements, and Fig. 2 is a longitudinal vertical section of the same, Fig. 3 is a detail rear elevation to show the end slots in the shield-head.

The frame A, cylinder B, feed-board C, and concave may be of the usual or any suitable description.

In the frame A, diagonally upward and rearward from the center of the cylinder B, the revolving comb D is journaled. This comb consists of a shaft or small cylinder provided with any suitable number of rows of teeth or pegs similar to those on the thrashing-cylinder. It is here shown as having two rows diametrically opposite each other. This comb revolves in the same direction as the thrashing cylinder, as indicated by the arrows, and it may be driven'by gearing, belting, or other suitable means. As the cylinder revolves any straw which may be disposed to adhere to it is combed off by the teeth of the comb D, (which teeth pass between those of said cylininder,) and is carried into the separator, which is connected to the thrasherin the usual manner.

Attached to the frame A, above the comb D, and in the same general direction from the cylinder-shaft, is the stationary comb-shield E, which is composed of a head and a row of teeth or pegs considerably longer than those on the comb and cylinder. The head consists of a board or bar, which is secured to the frame A by two screws, f, one at each end, passing through slots in the head and into the frame...

At each end of the head are two set-screws, G G, one above and one below the screw f. By means of these slots, through which the screws f pass, the head may be adjusted longitudinally, and by tightening one of the set-screws G and loosening the other at each end the head may be adjusted so as to place the teeth or pegs nearer to or farther from the comb D. As the comb D revolves its teeth pass between those of the comb-shield E, and are thus cleared of any straw which may have adhered to them after combing it from the cylinder, and all the straw thus arrested and combed out is passed into the separator with the rest of the straw passing through the machine.

Having thus described my invention, I claim as new and desire to secure by Letters Patcut-- 1. The combination, in a thrasher, with the revolving comb D, of the comb-shield E, having its teeth projected at a tangent to the comb and between its teeth, as and for the purpose specified.

2. The combination, with the head of shield E, slotted at each end, of the set-screws G G and clamp-screws f, arranged as and for the purpose set forth.

JAMES C. KEITH.

Witnesses:

T. D. J oHNsoN, J ESSE FARR-INGTON. 

